nav{
	width:100%;
	height:50px;
	background:#fafafa;
	position:fixed;
	top:50px;
	left:0px;
	color:#777;
	line-height:22px;
	border-bottom:1px solid #eee;
	z-index:50;
	ul{
		li{
			list-style:none;
			float:left;
			margin-right: 36px;
			a{
				color:#777;
				text-decoration:none;
			}
		}
	}
}


